source for smt probe clip

On 10/27/18 9:13 PM, Al Kossow via cctalk wrote: This request was related to the displaywriter board prober I'm working on I've abandoned DIP clips for individual wires My current thoughts on the probes are a single sense comparator, and an string of tlc6c598 DMOS drivers to common on a strip of 41 POGO pins on a push solenoid moved across the x axis of the board by the AxiDraw. Setup of the scan is easy, the chip has clear, load and shift. On each pass, clear the chain, load a 1 on the serial input then shift to probe the other 40 pins. Step and repeat. This is simple enough the whole thing should be able to be bit banged by an FTDI UM245R Software is then pretty simple. Display a .1" grid of points (41x67) and each single-pin probe sweep is a net. Light the hits so you don't bother scanning points that are already in a net. Start with power and ground. An added benefit is you'll pick up the DIP, power and ground connections to all the passives, as well as all of the vias in the net and connections to the IBM cans that you can't probe from the top.