06 May 2019

The story behind Mandela Grocery and Red Bay Coffee

Behind the core, social business operations of Mandela Grocery and Red Bay Coffee are tiny rooms. Tiny rooms with large trash cans. This is where this story begins - at the end where everything is finished ... or is it? It is called green waste because it is almost alive...

27 Mar 2019

How To Interface Sensors

Electronics is the art of controlling electron flow. Software begins at the end of electronics. Software scales electronics. At the end of software is humans. Software allows humans to communicate with machines. At the beginning of electronics is the physical world. Software is abstract, the real world is not. The...

26 Sep 2018

A Gift For Writing

The other day I was in a writing mood and got a gift for it. A fun pen knife from instructables For writing this article ... Then I started feeling hot and wrote a spicier one But serious .. how does one carry this on their belt .....

29 Jan 2018

Greenhouse Control and Monitoring Systems

A greenhouse is an enclosed structure inside which plants are grown in a controlled environment. But plants naturally want to be outside, and that is where they do best. So a good greenhouse creates the best outside environment for plants, inside. This means it is necessary to understand plant needs...

04 Jan 2018

Yam Propagation, Monitoring And Visualizing

Yam yields have decreased as a result of disease and bad seed. We designed and prototyped this for rural farmers in Nigeria. The objective of this project is to address some of those issues by using hydroponics for propagation of seedlings by tissue culture clones and plant cuttings. A further...

01 Dec 2017

Big Mama

Mama used to say  ‘pahali utupwa si pahali uangukwa’, which translates to ‘where it is thrown is not where it falls’. She used it to remind us that whereas we can initiate actions we can’t control reactions. We started by wanting to building an aquaculture based farm around a five...

27 Nov 2017

how rainfall affects our aquaponics orp just like a v2 controller ... you really don't have to follow the advice ... it maybe a good idea to check though when you get interesting alerts. guess what i found, we had acid or bacterial rain .. or something caused my water to go acidic. these grow...