Breadboard Goals - Page 1
Forum section: electronics / beginners

author: wayfarer.technologies
author_rank: Contributor
timestamp: April 17, 2023, 03:44:59 am
content: Breadboard GoalsI bought a nice Twin Industries board with 2300+ contacts, basically 3 boards and a top rail across all three on a metal backplane. Its a really nice breadboard. It also came with a few wires.I also have a soldering iron and dimmer switch in a blue 2-gang box Im working on.I have somewhere a bunch of 4000 series CMOS ICs and discrete components. I cannot locate them so I may order another set soon.My goal is to set up on the breadboard by the end of the month:an Atari Punk Console or derivative. (I almost remember how by memory)a debounced switch.bypass and decoupling capacitors (idk for something I need the practice)an LED you can turn on or off my pushing the same button over and overReasonable GoalsLet's Do This!!.

author: barshatriplee
author_rank: Regular Contributor
timestamp: April 17, 2023, 10:30:48 am
content: Here is a tutorial on how to make an Atari Punk console using 555 IC. You can check this out for a reference.https://www.instructables.com/Atari-Punk-Console-Synthesizer/For building a debounced switch, you'll need a switch and a few additional components such as a capacitor and a resistor. Debouncing is important to ensure that the switch is not activated multiple times when pressed, and to prevent false triggering. Again, there are many resources online for building a debounced switch, including schematics and tutorials.Bypass and decoupling capacitors are used in electronic circuits to provide a low-impedance path for high-frequency signals and to stabilize the power supply. They are often placed close to the power pins of ICs to reduce noise and improve performance. Practicing the use of these capacitors is a great way to improve your circuit-building skills.For the LED circuit, you'll need a few basic components such as a resistor and an LED. You can use a switch to toggle the LED on and off, or you can use another 555 timer circuit to make the LED blink on and off at a specific frequency.

author: BillyO
author_rank: Super Contributor
timestamp: April 17, 2023, 04:03:44 pm
content: You could do all that with a PICAXE-14M2.Maybe even an 08M2.

author: wayfarer.technologies
author_rank: Contributor
timestamp: April 19, 2023, 04:03:25 pm
content: I have heard that I should use 74HCxx series chips. I am not 100% on why;from what I understand it has to do with noise on the breadboard and maybe propagation delay.I am ordering several things from mouser, digi-key and the 'bay.I am primarily ordering Ti chips, and am looking at some latches, flip-flops and shift-registers.I am going to be running at low speed, and for now 5v.I'd prefer to be at 3.3v, or even lower, 5v is fine for now.I am also getting a 32.768 kHz clock-can, and maybe a 1Mhz or a 32.768 Mhz. Id like a way to get a pretty accurate millisecond clock, I can time from binary easily.

author: rdl
author_rank: Super Contributor
timestamp: April 19, 2023, 05:34:01 pm
content: If this is the kind of stuff that interests you, consider getting a copy of The CMOS Cookbook by Don Lancaster. Maybe the TTL Cookbook too. Used hard copies are good to have, but don't pay Amazon's prices. You can get free pdf versions at the author's website.https://www.tinaja.com/ebooks/cmoscb.pdfhttps://tinaja.com/ebooks/TTLCB1.pdf

author: wayfarer.technologies
author_rank: Contributor
timestamp: April 19, 2023, 10:24:33 pm
content: Quote from: rdl on April 19, 2023, 05:34:01 pmI have the cmos cookbook

author: themadhippy
author_rank: Super Contributor
timestamp: April 19, 2023, 11:50:22 pm
content: QuoteOr just buy a load of nand or nor gates,from those you can build the others

author: wayfarer.technologies
author_rank: Contributor
timestamp: April 26, 2023, 07:31:39 pm
content: Quote from: themadhippy on April 19, 2023, 11:50:22 pmI'll go one better, I got 250 transistors, 5 NPN, 5 PNP 10 of each type.I am planning to make a few switches, loops, blinkers etc and then move on to an adder and a counter and such.In the end, I will will have a 2-bit computer moving crumbs around my breadboard.might go for a MC14500B or an Intel 3000, however, just a 2 bit adder, comparator or such, maybe push it to 4 bitI am trying to really grasp the basics and get a low level understanding, so as I move forward I can possibly use a 4-bit chip of some kind to assist in higher order computing or addressing, such as a 16-bit mcu/cpu using the 20-bit ISA bus, or larger memory arrays, or bigger math operands, etcso I am working an elenco primer on my breadboard at the moment. I built an LED, switch, resistor circuit with my breadboardI checked my board power supply unit, its a cheap My Robot breadboard PSU, the 3.3v was fairly stable, the 5v spiked to 7.5 v several times in a few seconds... wow!getting set up here, more progress this week!

author: rstofer
author_rank: Super Contributor
timestamp: April 27, 2023, 04:13:51 pm
content: For ALU related projects, study the 74LS181 and 74LS182. Other logic families may also include these devices.

author: MrAl
author_rank: Super Contributor
timestamp: April 27, 2023, 07:47:06 pm
content: Quote from: wayfarer.technologies on April 17, 2023, 03:44:59 amHi,When i first spotted this thread i read the title too fast and it looked like "Breadboard Girls" ha ha. That gave me the image thought that there would be this club for girls that meet once a month to discuss breadboarding things like the Arduino and other projects. This came on the tail of the South Park episode "Board Girls" which was funny and addressed some social issues.As far as chips go though, you've got the whole internet to find chips and other parts. For CMOS i like to go with the 74xxxxx series CMOS rather than the older 4000 series. If you do go with the 4000 series, try to stick with the 4000B series.

author: wayfarer.technologies
author_rank: Contributor
timestamp: April 30, 2023, 01:37:28 am
content: yeah I got a starter kit of 74xx chips, and 250 transistors, and some LEDs and resistors, and not very many caps.I am most likely to use 4000 series chips in audio circuits I think, or motors.Im not planning o buy a full kit of 4000 series chips any time soonwithout many capacitors, I am not going to get much of an APC, or even much of a tone generated.Icanhowever, make an LED blink at different rates with a 10k potentiometer or such.Ican, make a latch or flip-flop. Ican, make a few basic logic gates first hand and see how they work.A half adder and either full adder, are not very complex.So I will put together what I can and go from there.One day left, and I will meet at least some of my goals, and I am far more prepared for next month's challenges.Pics tomorrow!

author: wayfarer.technologies
author_rank: Contributor
timestamp: May 01, 2023, 04:23:54 am
content: missing parts. used what I had and made something work.not all of my goals were met, and I made mistakes.I learned things, solved problems and know better what I am after.I am going to add an OR gate tomorrow so I can trigger the pulse manually.I will add a potentiometer to make it variable.May Goals being posted tomorrow.April Results so far:pics of the work area tomorrow too, lots of moving heavy things were done. :wink:

author: wayfarer.technologies
author_rank: Contributor
timestamp: May 05, 2023, 06:39:42 pm
content: May Goals:Build a better 'clock'.Make an OR gate, or threeBuild all of the basic logic gate structures.finish up any goals from last month.I have 250 transistors, some resistors and LEDs, I should be able to build a few basic logic structures, maybe a latch or flip-flop.