Pages: [1]   Go Down
Author Topic: MCP79412 Real-Time Clock/Calendar breakout board  (Read 4149 times)
0 Members and 1 Guest are viewing this topic.
Grand Blanc, MI, USA
Offline Offline
Faraday Member
**
Karma: 95
Posts: 4086
CODE is a mass noun and should not be used in the plural or with an indefinite article.
View Profile
WWW
 Bigger Bigger  Smaller Smaller  Reset Reset

I have listed my MCP79412 Real-Time Clock/Calendar breakout board as a Fundraiser on Tindie.

I am hand-assembling the boards in batches. Once the Fundraiser minimum is met, I will order boards and parts. Check the Updates section on Tindie for current status.

The Microchip MCP79412 RTCC offers several advantages over other low-cost real-time clocks. Among these are on-chip calibration, dual alarms, power fail/restore timestamps, 64-bit unique ID, 128 bytes EEPROM, 64 bytes battery-backed SRAM, power supply 1.8 - 5.5V, I2C clock frequency to 400kHz.

I have written an Arduino library to support the MCP79412, which is available on github. (For other applications, the MCP79412 uses a standard I2C interface.) This is an open-source project (CC BY-SA), please see my blog post for code, Eagle files, and additional information.
Logged

MCP79411/12 RTC ... "One Million Ohms" ATtiny kit ... available at http://www.tindie.com/stores/JChristensen/

Leighton Buzzard, UK
Offline Offline
Edison Member
*
Karma: 21
Posts: 1339
View Profile
 Bigger Bigger  Smaller Smaller  Reset Reset

this looks like a decent project
what's in it for "investors"?
compared say to KickStarter?
Logged

there are only 10 types of people
them that understands binary
and them that doesn't

0
Offline Offline
Full Member
***
Karma: 1
Posts: 185
www.rocketscream.com
View Profile
 Bigger Bigger  Smaller Smaller  Reset Reset

Library looks very well written and much effort put in!
Logged

Grand Blanc, MI, USA
Offline Offline
Faraday Member
**
Karma: 95
Posts: 4086
CODE is a mass noun and should not be used in the plural or with an indefinite article.
View Profile
WWW
 Bigger Bigger  Smaller Smaller  Reset Reset

this looks like a decent project
what's in it for "investors"?
compared say to KickStarter?

Fundraisers on Tindie are just a way to test the market and raise money up front to produce a product. It's really a pre-order, as opposed to an investment. If I can sell an initial small batch of boards, then I plan to order a second batch, and sell them as a regular stocked product.

Library looks very well written and much effort put in!

Thank you very much! I had fun writing it and it seems to work well. I've sent RTCs to a couple people and I also have a local friend that has used them without complaint. A marketing manager from Microchip noticed my blog post and sent a note of appreciation smiley-grin
« Last Edit: July 25, 2013, 07:02:48 am by Jack Christensen » Logged

MCP79411/12 RTC ... "One Million Ohms" ATtiny kit ... available at http://www.tindie.com/stores/JChristensen/

Leighton Buzzard, UK
Offline Offline
Edison Member
*
Karma: 21
Posts: 1339
View Profile
 Bigger Bigger  Smaller Smaller  Reset Reset

aha that makes sense
good luck!
Logged

there are only 10 types of people
them that understands binary
and them that doesn't

Grand Blanc, MI, USA
Offline Offline
Faraday Member
**
Karma: 95
Posts: 4086
CODE is a mass noun and should not be used in the plural or with an indefinite article.
View Profile
WWW
 Bigger Bigger  Smaller Smaller  Reset Reset

aha that makes sense
good luck!

Thanks. Your question got me to thinking, so I lowered the price for the Fundraiser in recognition of the delay required to order boards, etc.
Logged

MCP79411/12 RTC ... "One Million Ohms" ATtiny kit ... available at http://www.tindie.com/stores/JChristensen/

Grand Blanc, MI, USA
Offline Offline
Faraday Member
**
Karma: 95
Posts: 4086
CODE is a mass noun and should not be used in the plural or with an indefinite article.
View Profile
WWW
 Bigger Bigger  Smaller Smaller  Reset Reset

The Tindie Fundraiser was successful! PC boards and parts are ordered. I'm looking forward to building them and getting them to people to use as soon as I can.

I know that (at least) some of the orders came from members of this forum, so a special Thank You to those folks! There are still a couple boards left ... smiley-grin
« Last Edit: August 02, 2013, 06:42:11 am by Jack Christensen » Logged

MCP79411/12 RTC ... "One Million Ohms" ATtiny kit ... available at http://www.tindie.com/stores/JChristensen/

Leighton Buzzard, UK
Offline Offline
Edison Member
*
Karma: 21
Posts: 1339
View Profile
 Bigger Bigger  Smaller Smaller  Reset Reset

well done you!
Logged

there are only 10 types of people
them that understands binary
and them that doesn't

Pages: [1]   Go Up
Jump to: