WTB: Little Bee Current Probe, used or make a new one for me - Page 1
Forum section: electronics / general

author: the_cake_is_a_lie
author_rank: Contributor
timestamp: November 15, 2023, 07:13:44 pm
content: I missed the crowd sourcingcampaign, it's sold out onMouserand Weston posted it's discontinued. I can pay$100 USD flatfor a used one made by Weston, including shipping to ship to me in the US.I don't trust myself to make a sensitive piece of electronic equipment. If youmake a new onefrom the GitHub design, I could pay$160 USD, half upfront. I'd have to see a decent 20 Hz - 20 MHzbode plotcomparable to the original's before shipping.I only need to measure current distortion 5A and below, so this seems perfect for me.

author: thm_w
author_rank: Super Contributor
timestamp: November 15, 2023, 10:25:58 pm
content: Whats wrong with the used one?Sourcing the parts is very difficult.

author: Kosmic
author_rank: Super Contributor
timestamp: November 15, 2023, 11:07:07 pm
content: Quote from: thm_w on November 15, 2023, 10:25:58 pmFinding one ?

author: Kosmic
author_rank: Super Contributor
timestamp: November 16, 2023, 12:07:41 am
content: Quote from: thm_w on November 15, 2023, 10:25:58 pmI don't know, all the parts are readily available on Digikey. Just for the IC it's around 38$

author: thm_w
author_rank: Super Contributor
timestamp: November 16, 2023, 01:29:18 am
content: Quote from: Kosmic on November 15, 2023, 11:07:07 pmDid you read the OP?

author: Kosmic
author_rank: Super Contributor
timestamp: November 16, 2023, 02:05:18 am
content: Quote from: thm_w on November 16, 2023, 01:29:18 amhehe yes, he is looking for an used one or want someone to make one for him. The title says it all.Why somebody would post a "WTB used or new" if he already had access to one ?

author: the_cake_is_a_lie
author_rank: Contributor
timestamp: November 16, 2023, 10:19:00 pm
content: Thanks all for the responses. Alas no offers in my inbox.I can step up to$110 used if it looks mint in pics. Problem with DIY is I have no experience with making or calibrating electronic measuring devices. I also don't have a PIC programmer. The price point is low enough that I'm happy to pay a premium and avoid the time and labor.I don't see a BOM with links to buy the components but on the current-sensePDF:HMC1041Z: 11.49AD8129: 5.33PICO16F1776-ISS(I think is the same): 2.65MCP1640(not sure of packaging): 0.812xTLV3542: 2x1.802xTMUX1219: 2x0.732xDMG6601LVT-7: 2x0.39$26.12 + 6 Shockley diodes, 3 LEDs, 2 "small" ferrite beads, 1 fuse, 1 SPDT switch, connectors and passives. I assume 1% resistors, 10% 1uF ceramic, 20% uF electrolytic and 20% 4.7uH inductor. I'd pay extra for tantalum 22uF.You're welcome to use any official distributors. I don't mind non-RoHS components or leaded solder.

author: thm_w
author_rank: Super Contributor
timestamp: November 16, 2023, 10:29:11 pm
content: Quote from: the_cake_is_a_lie on November 16, 2023, 10:19:00 pmWhat about the 3D printed clamp portion?PCBs?Quote from: Kosmic on November 16, 2023, 02:05:18 amOh shit my bad, I thought Weston WAS offering a used one for that price.

author: the_cake_is_a_lie
author_rank: Contributor
timestamp: November 16, 2023, 10:39:52 pm
content: I don't about PCB needing to be 4 layered or needing to 3D print the clamp, fair points. If one person prints the clamp and one person does the assembly, I can pay each of you a cut of the $150. I was really just expecting someone to have the current probe collecting dust. I don't use everything I buy.