Hello @Marcel van Kervinck,
I'm sorry you had to go away. It was a chance to chat with you and I hope Hackaday will preserve your work and logs for ever. You are sorely missed.
I'll finish this short log by quoting him in a private discussion, when he reacted to my surprise that he wasn't a TTLer before :
Those who use TTL are not in a hurry
(june 16th, 2017)