Used circuit board contain Atmega2560 ,ATmega640 ,Ulfat etc etc .. - Page 1
Forum section: electronics / general

author: Alphatronique
author_rank: Regular Contributor
timestamp: December 09, 2013, 09:07:10 pm
content: Hiwas in process to upgrade one of my customer product whit newer versionso have couple of used pcb that contain several nice chip on itAtmega2560ATmega640GHI Ulfat + MAX3421EEHJMAX3243 (may removed on some board)AT45DB161Dand several other stuffif what to make back in service i may supply schematicright now i have 26 + (22 next week) board ,but more to come (max 250-300)if some one interested i think 25$/each may good start

author: Alphatronique
author_rank: Regular Contributor
timestamp: December 09, 2013, 09:17:24 pm
content: if curious that new version of that board ..remplace 4 CPU by a single STM32F4and cut bom cost by near 3/4

author: Psi
author_rank: Super Contributor
timestamp: December 09, 2013, 09:42:32 pm
content: Quote from: Alphatronique on December 09, 2013, 09:07:10 pmGood start to try and get rich?ATMEGA2560 $10.50ATmega640 $7MAX4321E $0.72AT45DB161 $1.10Total $19.3250% rule for second-hand goods = $9.66, say $10Even then, they all have to be unsoldered and cleaned up with solder braid.Then the MCUs need to be erased and their fuse bits reset.$5 seems more reasonable, but maybe that's just me being cheap.

author: Alphatronique
author_rank: Regular Contributor
timestamp: December 09, 2013, 09:58:00 pm
content: Hitell me were you buy your partdigi-key was 18$ only for The Mega2560Mega64 13.79$saelig was 15.76$ for ulfat + UPS shippingMAX3421E was 14.5700$ (sorry make typo on first post PN)and so on ..so sorry i build that board since several year and batch of 12 cost near 1300$ in partok i remove the MAX3160CAP and the LM22670MRE-5.0CT-NDbut that my last order for make 12 on that board .. (missing on that Ulfat and AT45DB161D )1 25 MAX3160CAP+-ND IC TXRX RS232/485/422 20SSOP 25Immediate 0 10.83680 $270.922 12 644-1037-1-ND CRYSTAL 16.000000 MHZ 8PF SMD 12Immediate 0 0.72400 $8.693 12 644-1033-1-ND CRYSTAL 10.000000 MHZ 8PF SMD 12Immediate 0 0.72400 $8.694 12 644-1034-1-ND CRYSTAL 12.000000 MHZ 8PF SMD 12Immediate 0 0.72400 $8.695 12 576-1152-ND IC REG LDO 250MA 5V 0.5% SOT223 12Immediate 0 1.86000 $22.326 12 296-9845-1-ND IC NAND GATE 2-IN SOT-23-5 12Immediate 0 0.46000 $5.527 12 576-2163-ND IC USB SWITCH DUAL 8-SOIC 12Immediate 0 1.58000 $18.968 12 296-14437-1-ND IC LDO REG 3.3V 250MA SOT223-6 12Immediate 0 2.35000 $28.209 12 296-14429-1-ND IC LDO REG 1.8V 250MA SOT223-6 12Immediate 0 2.35000 $28.2010 12 296-16845-1-ND IC BUS TRANSCVR 2BIT N-INV SM8 12Immediate 0 0.81000 $9.7211 12 BZT52C3V3-FDICT-ND DIODE ZENER 3.3V 500MW SOD-123 12Immediate 0 0.26300 $3.1612 200 F2226CT-ND VARISTOR TVS MULTI 9V 30A 0603 200Immediate 0 0.44730 $89.4613 12 102-1152-ND BUZZER 2.048KHZ 12MM PC MOUNT 12Immediate 0 0.83000 $9.9614 12 445-1975-1-ND INDUCTOR SHIELD PWR 10UH 10145 12Immediate 0 1.20800 $14.5015 25 SK34A-TPCT-ND DIODE SCHOTTKY 3A 40V SMA 25Immediate 0 0.44900 $11.2316 12 ATMEGA640-16AU-ND IC MCU AVR 64K FLASH 100-TQFP 12Immediate 0 12.17000 $146.0417 25 TLP172GFCT-ND PHOTORELAY MOSFET OUT 4-SOP 25Immediate 0 1.86560 $46.6418 12 ED90062-ND CONN RECEPT USB TYPE A PCB 12Immediate 0 1.45500 $17.4619 12 WM23809-ND CONN HEADER 20POS 4.2MM VERT TIN 12Immediate 0 2.51000 $30.1220 12 A9AAT-1306F-ND FLEX CABLE - AFE13T/AF13/AFE13T 0Immediate 12Value Add 3.12100 $37.4521 12 MAX3421EEHJ+-ND IC USB PERIPH/HOST CNTRL 32TQFP 12Immediate 0 13.35000 $160.2022 12 LM22670MRE-5.0CT-ND IC REG SWITCH BUCK 3A 5V 8PSOP 12Immediate 0 5.82000 $69.8423 12 ATMEGA2560-16AU-ND IC AVR MCU 256K 16MHZ 100TQFP 12Immediate 0 18.53000 $222.3624 25 296-19807-1-ND IC RS232 3V-5.5V DRVR 28-SOIC 25Immediate 0 1.53120 $38.28Subtotal $1,306.61

author: Psi
author_rank: Super Contributor
timestamp: December 09, 2013, 10:22:48 pm
content: I was listing the reel prices from digikey.ok, fair enough, there's other good stuff there too.But i dont think you're going to sell many for $25 each, not enough to move 250-300 anyway.

author: Alphatronique
author_rank: Regular Contributor
timestamp: December 09, 2013, 10:36:42 pm
content: Hiif some one take all 10$ may goodbut if sell it one by one 25$ may better was lazy to go several time to post office ;-0and think it a crime to trash it ,since i may reuse for something else (ardunino mega ?? )the design work good it bad software that plagued that version and high bom costhave jtag pad on back of the board and chip was not lockedand the Mega2560 may program via bootloader just rename .hex into DIGILOAD.FRM and put usb flash drive and power-up .. all 4 uart was accessible on both Atmega chipBest regard

author: Psi
author_rank: Super Contributor
timestamp: December 10, 2013, 12:25:18 am
content: Quote from: Alphatronique on December 09, 2013, 10:36:42 pmyep, its a crime to throw them away.