One breakout board to fit 6, 11, 16 and 20mm sized coin cells.
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The Coin Cell Maestro facilitates use of different sized coin cell batteries. The radial and 90 degree offset of the holes accomodates 4 different sized batteries: 6mm, 11mm, 16mm and 20mm. Please see the component list to find the corresponding clip for your sized battery.
You can purchase the Coin Cell Maestro board off the tindie page link in the Links section.
Step 1: Determine your battery size and order the clip from your favorite supplier (the clip sizes are in the Components)
Step 2: Deposit a small solder blob on the center circle; this ensures better contact with the coin cell
Step 3: Orient the clip on the board.
There are two possible orientations for a clip:
I only ask for two things: open source the design (which I see you are doing) and credit the concept to analog10@analog10.com in your module literature and on the PCB if there is space. Glad you can make use of it. One thing you may do is remove the copper fill surrounding the central terminal on the circle side, as that should allow the battery to make better contact with the circular pad.
There does not seem to be support for the 2430/2450 format. Next revision maybe ? :-)
I also use a bunch of CR927 ;-) Why not make/design a variable-size coin socket ?
I find out that solder does not make good long term reliable contacts for batteries as its oxide is a weak conductor. What I usually do is to use gold plated headers pins for contacts.
Thanks for the heads up. I wonder if one of the gold plated contacts from standard female header would work here as well.
I have use all kinds of gold plated contacts e.g. edge connectors, flatten IDC contacts, header pins etc. depending on what is needed. Find one that is generous with the gold plating (vs selective plated ones)
Analog Two
brainstorm
AVR
shelhamer.aaron
Jacob Killelea
i really like your concept. Mind if I make a Pure modules compatible module.